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There is plenty of interest in Sam Kasiano as the Bulldogs look to ease the load after signing Andrew Fifita.

Several NRL clubs including Cronulla and South Sydney are circling Canterbury prop Sam Kasiano, who could find himself forced out of Belmore as a result of Andrew Fifita coming on board.

Kasiano's manager Mario Tartak admits his phone has been "ringing off the hook" with inquiries about his client since Fifita's mega four-year deal with the Bulldogs was announced on Wednesday.

Canterbury have made it clear that re-signing James Graham is a major priority, but to accommodate the English international and Fifita, they would almost certainly have to shed at least one of their other big-name props.

Country Origin workhorse Aiden Tolman is contracted with the club until the end of 2017 and New Zealand representative Kasiano until the end of next season.

The Bulldogs also have promising youngsters Lloyd Perrett and David Klemmer on their books.

After missing out on Fifita, Souths are desperate to find a replacement for Sam Burgess in their engine room, and Kasiano or Tolman would be an ideal fit.

Meanwhile, the embattled Sharks must now move to fill the giant void left by Fifita in their scrum.

"Sam is now the biggest prop off contract," Tartak said.

"He's an x-factor.

"Put it this way, my phone has been ringing off the hook.

"I've had a lot of clubs calling me, there's no shortage of interest."